Design and Construction of Working Trestle for Ramp Bridge of Offshore Platform of Hangzhou Bay Sea-Crossing Bridge

The substructure of ramp bridge of the offshore platform of Hangzhou Bay Sea-Crossing Bridge was all designed as the integrated structure of piles and columns,and the construction of bored piles of the structure was to be carried out on the working trestle to be built.As the trestle is an important temporary works and is located in the complicated and varying sea environment,the risk of building of the trestle should be minimized and the safety operation of the trestle should be ensured.In this paper,the design and construction of the trestle structure are dealt with.